2154456486 has 48 divisors (see below), whose sum is σ = 5745221664. Its totient is φ = 568207872.

The previous prime is 2154456467. The next prime is 2154456517. The reversal of 2154456486 is 6846544512.

It is a happy number.

2154456486 is a `hidden beast` number, since 2 + 1 + 5 + 4 + 4 + 564 + 86 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 656011 + ... + 659286.

It is an arithmetic number, because the mean of its divisors is an integer number (119692118).

Almost surely, 2^2154456486 is an apocalyptic number.

2154456486 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2154456486 is an abundant number, since it is smaller than the sum of its proper divisors (3590765178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2154456486 is a wasteful number, since it uses less digits than its factorization.

2154456486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315325 (or 1315322 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

The square root of 2154456486 is about 46416.1231254830. The cubic root of 2154456486 is about 1291.5540204467.

The spelling of 2154456486 in words is "two billion, one hundred fifty-four million, four hundred fifty-six thousand, four hundred eighty-six".